Should You Grade Giovanni's Nidoking #7 from Gym Challenge?
Free PSA grading EV calculator pre-loaded with live market data for Giovanni's Nidoking #7. Current PSA 10 gem rate is 4.8% based on 2,103 graded copies. PSA 10 sales average $521.61 vs a raw market of $74.91. Expected value of grading: $8.63 (6% ROI). Verdict: Sell raw.
Gym Challenge · #7 · Rare Holo
Default-tier verdict
Sell raw+$9 (+6% ROI)
Based on raw market $74.91, PSA 10 $521.61, gem rate 4.8% (2,103 graded). Adjust inputs below for your card's exact condition.
About this calculator
This page computes the expected value (EV) of submitting Giovanni's Nidoking #7 to PSA for grading. EV factors in real PSA population data (gem rates), live market prices for raw and graded copies, and PSA's tiered fee structure including upcharges when a card's graded value exceeds the tier's Max Insured Value. Adjust the inputs to match your card's exact condition for a personalized recommendation.
PSA population summary
| Grade | Population | Rate |
|---|---|---|
| PSA 10 | 100 | 4.8% |
| PSA 9 | 616 | 29.3% |
| PSA 8 | 623 | 29.6% |
| PSA 7 | 322 | 15.3% |
